<!DOCTYPE html>
<html>
    <head>
        <style type="text/css">
            body {
                margin: 0;
            }
            .block0 {
                position: absolute;
                background-color: yellow;
                left: 50px;
                top: 0px;
                width: 100px;
                height: 100px;
            }
            .block1 {
                position: absolute;
                background-color: yellow;
                left: 250px;
                top: 0px;
                width: 100px;
                height: 100px;
            }
        </style>
    </head>
    <body>
        <div class="block0"></div>
        <div class="block1"></div>
    </body>
</html>
